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Carrier 38ESA048 Defrost Sensor Board
The defrost control board initiates an important defrosting cycle which may be necessary to remove frost build-up that may accumulate. The board is influenced by a sensor located near the condenser to decide when the defrost cycle should begin.
Symptoms of a poorly working defrost board
- Self defrost sequence never runs even though there is a large amount of frost on the outdoor unit
- Most systems will stop operating for the fact of frost blocking the airflow outside
- The main control board may issue an error of some type when encountering a problem
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